Citi is offering an increased bonus on the AAdvantage Platinum Select World Elite Mastercard once again, matching the best ever public bonus. The offer has the 24 month restriction. I posted this offer back in October, but it is still available. Much longer than I expected.
If you already took advantage of it recently, then it looks like it’s possible to get some extra miles. There many data points on Reddit and at Doctor of Credit of people being matched to a 75,000 miles, just by contacting Citi and asking for the extra miles. Definitely worth your time for a possible 15,000 miles.
Let me know if it works for you.